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**Feeds**

Indexing to subtract sections of an array

Suppose you have 20 elements: Reshape to 4 rows and 5 columns X = reshape(1:20,5,4)'; % Substract rows Y = bsxfun(@m...

nästan 10 år ago | 0

how to separate objects in binary image?

Your should check regionprops and <http://www.mathworks.com.au/help/images/morphology-fundamentals-dilation-and-erosion.html mor...

nästan 10 år ago | 0

Problem with vision.VideoFileReader

Try running this code using the shaky_car video inbuilt in Matlab and see if it works: videoFReader = vision.VideoFileReader(...

ungefär 10 år ago | 1

manipulating cells in array.

% One of the many solutions t = ismember(A,'0') A(t)=[];

ungefär 10 år ago | 0

| accepted

second derivative of an image

There is a nice explanation on image derivative <http://www.swarthmore.edu/NatSci/mzucker1/e27/filter-slides.pdf here> . Please ...

ungefär 10 år ago | 0

how can i differentiate between images

% test image Img = zeros(20, 20); Img(5:15,5:15)=1; % Find if '255' intensity pixels exist in the image temp =...

ungefär 10 år ago | 0

how to get black & white pixels count from grayscale image...???

black corresponds to zeros in your image and white corresponds to ones if your image is double format. I_double = im2double...

ungefär 10 år ago | 0

how to calculate the diameter of a vessel

I would start by first experimenting with <http://www.mathworks.com.au/help/images/ref/regionprops.html regionprops> function in...

ungefär 10 år ago | 1

Left of a string

If you are accessing a cell array, you should use curly braces. Check out the examples <http://www.mathworks.com.au/help/matlab/...

ungefär 10 år ago | 0

how to avoid index out of bounds error

I tried running your programme using the Matlab built-in image, blobs.png and received the following error: *Attempted to ac...

mer än 10 år ago | 0

making of a gui

I would suggest you learn the basics of making a GUI <http://www.mathworks.com.au/help/matlab/gui-building-basics.html here>

mer än 10 år ago | 0

Increasing filter size of edge detector

There is a nice <http://stackoverflow.com/questions/9567882/sobel-filter-kernel-of-large-size thread> on stackoverflow which mig...

mer än 10 år ago | 0

Crack Matlab Executable file?

Have a look a <http://www.mathworks.com.au/help/matlab/ref/pcode.html pcode> .

mer än 10 år ago | 0

convert inf value to integer value

Download the powermod function <http://www.mathworks.com.au/matlabcentral/fileexchange/22725-variable-precision-integer-arithmet...

mer än 10 år ago | 0

Create an Array with a Counter?

Why not use an array and save the elapsed time using tic and toc? There is a nice example <http://stackoverflow.com/questions...

mer än 10 år ago | 0

How can I find pixel coordinates of a perimeter in a binary image?

Assuming your image is a binary one: [a,b]= find(I==1); % get the coordinates

mer än 10 år ago | 0

| accepted

Hi, i want to know dt how to get 0's and 1's from a binary image?

I = imread('img.bmp'); I_bin = im2bw(I); % find the '0's in the image: a = find(I_bin==0); % find the '1's in the imag...

mer än 10 år ago | 0

| accepted

How can I remove only the horizontal lines from the image preserving any arbitrary drawing over it

Did you check <http://www.mathworks.com.au/company/newsletters/articles/applying-modern-pde-techniques-to-digital-image-restorat...

mer än 10 år ago | 0

Iris Recognition Project.

Please check out libour masek iris code, both the thesis and the matlab code can be found <http://www.csse.uwa.edu.au/~pk/studen...

mer än 10 år ago | 0

| accepted

Given x and y coordinates of any point in an image, how to know if it is black or white

By the intensity value you get at that point. For example, if your image is double: I = im2double(imread('img.bmp')); ...

mer än 10 år ago | 0

Motion detection in video

You could estimate the motion from one frame to another using <http://www.mathworks.com.au/matlabcentral/fileexchange/8761-block...

mer än 10 år ago | 0

how to find mean absolute difference between two blocks of different images???

You can find a nice implementation of the above <http://www.mathworks.com.au/matlabcentral/fileexchange/8761-block-matching-algo...

mer än 10 år ago | 0

Skeletonisation of an image

<http://www.mathworks.com/matlabcentral/fileexchange/27543-skeletonization-using-voronoi This> should get you started

mer än 10 år ago | 0

Multiple loop doesn´t work with right values

You might need to initialize your cells first before saving to it. a = cell(1, num);

mer än 10 år ago | 0

display mean and max of images....

mean_img = mean(Img(:)); max_img = max(Img(:));

mer än 10 år ago | 1

| accepted

how to detect angle of an image

You might need a reference image / coordinates for the correct position and compare the difference between the two of them

mer än 10 år ago | 1

how to calculate delay between two operations?

Will tic and toc do the <http://www.mathworks.com.au/help/matlab/ref/tic.html trick> ?

mer än 10 år ago | 0

Loading and Saving a video

You can find lots of information and examples <http://www.mathworks.com.au/help/matlab/ref/videoreaderclass.html here.> This...

mer än 10 år ago | 0

tile-based image registration

You might find it useful to estimate the srt transformation using surf. Have a look at the examples on this <http://www.mathwork...

mer än 10 år ago | 0

find the pupil location of eye by dividing it into 8x8 region

The pupil region has a lower intensity than the rest of the image except for eyelashes. I would suggest you use an appropria...

mer än 10 år ago | 0